Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  kbuild: add ARCH=sparc32 target
  sparc32: fix build failure on CONFIG_SPARC_LEON
  sparc: Fixed random SPARC/LEON SMP CPU Stuck problem.
  sparc32: remove CONFIG_HAVE_PERF_EVENTS option
  sparc: don't #include asm/system.h in asm/jump_label.h
  sparc32: Fix unaligned stack handling on trap return.
  sparc: keep calling do_signal() as long as pending signals remain

8 files changed, 25 insertions, 44 deletions

diff --git a/Makefile b/Makefile
index 6b23f1b15fc4..519db43052a0 100644
--- a/Makefile
+++ b/Makefile
@@ -204,6 +204,9 @@ ifeq ($(ARCH),x86_64)
 endif
 
 # Additional ARCH settings for sparc
+ifeq ($(ARCH),sparc32)
+       SRCARCH := sparc
+endif
 ifeq ($(ARCH),sparc64)
        SRCARCH := sparc
 endif
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index a9aaed3c3d97..45d9c87d083a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -22,8 +22,6 @@ config SPARC
         select RTC_CLASS
         select RTC_DRV_M48T59
         select HAVE_IRQ_WORK
-        select HAVE_PERF_EVENTS
-        select PERF_USE_VMALLOC
         select HAVE_DMA_ATTRS
         select HAVE_DMA_API_DEBUG
         select HAVE_ARCH_JUMP_LABEL
@@ -50,7 +48,6 @@ config SPARC64
         select RTC_DRV_BQ4802
         select RTC_DRV_SUN4V
         select RTC_DRV_STARFIRE
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select PERF_USE_VMALLOC
 
diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h
index 62e66d7b2fb6..65c0d3029796 100644
--- a/arch/sparc/include/asm/jump_label.h
+++ b/arch/sparc/include/asm/jump_label.h
@@ -4,7 +4,6 @@
 #ifdef __KERNEL__
 
 #include <linux/types.h>
-#include <asm/system.h>
 
 #define JUMP_LABEL_NOP_SIZE 4
 
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index 0116d8d10def..5ad6e5c5dbb3 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -365,7 +365,7 @@ static int request_fast_irq(unsigned int irq,
         unsigned long flags;
         unsigned int cpu_irq;
         int ret;
-#ifdef CONFIG_SMP
+#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
         struct tt_entry *trap_table;
         extern struct tt_entry trapbase_cpu1, trapbase_cpu2, trapbase_cpu3;
 #endif
@@ -425,7 +425,7 @@ static int request_fast_irq(unsigned int irq,
         table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP;
 
         INSTANTIATE(sparc_ttable)
-#ifdef CONFIG_SMP
+#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
         trap_table = &trapbase_cpu1; INSTANTIATE(trap_table)
         trap_table = &trapbase_cpu2; INSTANTIATE(trap_table)
         trap_table = &trapbase_cpu3; INSTANTIATE(trap_table)
diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index e1656fc41ccb..7524689b03d2 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -56,8 +56,8 @@ void __init leon_configure_cache_smp(void);
 static inline unsigned long do_swap(volatile unsigned long *ptr,
                                     unsigned long val)
 {
-        __asm__ __volatile__("swapa [%1] %2, %0\n\t" : "=&r"(val)
-                             : "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
+        __asm__ __volatile__("swapa [%2] %3, %0\n\t" : "=&r"(val)
+                             : "0"(val), "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
                              : "memory");
         return val;
 }
diff --git a/arch/sparc/kernel/rtrap_32.S b/arch/sparc/kernel/rtrap_32.S
index 4da2e1f66290..5f5f74c2c2ca 100644
--- a/arch/sparc/kernel/rtrap_32.S
+++ b/arch/sparc/kernel/rtrap_32.S
@@ -78,9 +78,9 @@ signal_p:
         call    do_notify_resume
          add    %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr
 
-        /* Fall through. */
-        ld      [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
-        clr     %l6
+        b       signal_p
+         ld     [%curptr + TI_FLAGS], %g2
+
 ret_trap_continue:
         sethi   %hi(PSR_SYSCALL), %g1
         andn    %t_psr, %g1, %t_psr
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index 090b9e9ad5e3..77f1b95e0806 100644
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -34,37 +34,9 @@ __handle_preemption:
 __handle_user_windows:
                 call                    fault_in_user_windows
                  wrpr                   %g0, RTRAP_PSTATE, %pstate
-                wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
-                /* Redo sched+sig checks */
-                ldx                     [%g6 + TI_FLAGS], %l0
-                andcc                   %l0, _TIF_NEED_RESCHED, %g0
-
-                be,pt                   %xcc, 1f
-                 nop
-                call                    schedule
-                 wrpr                   %g0, RTRAP_PSTATE, %pstate
-                wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
-                ldx                     [%g6 + TI_FLAGS], %l0
-
-1:              andcc                   %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
-                be,pt                   %xcc, __handle_user_windows_continue
-                 nop
-                mov                     %l5, %o1
-                add                     %sp, PTREGS_OFF, %o0
-                mov                     %l0, %o2
-
-                call                    do_notify_resume
-                 wrpr                   %g0, RTRAP_PSTATE, %pstate
-                wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
-                /* Signal delivery can modify pt_regs tstate, so we must
-                 * reload it.
-                 */
-                ldx                     [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
-                sethi                   %hi(0xf << 20), %l4
-                and                     %l1, %l4, %l4
-                ba,pt                   %xcc, __handle_user_windows_continue
+                ba,pt                   %xcc, __handle_preemption_continue
+                 wrpr                   %g0, RTRAP_PSTATE_IRQOFF, %pstate
 
-                 andn                   %l1, %l4, %l1
 __handle_userfpu:
                 rd                      %fprs, %l5
                 andcc                   %l5, FPRS_FEF, %g0
@@ -87,7 +59,7 @@ __handle_signal:
                 ldx                     [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
                 sethi                   %hi(0xf << 20), %l4
                 and                     %l1, %l4, %l4
-                ba,pt                   %xcc, __handle_signal_continue
+                ba,pt                   %xcc, __handle_preemption_continue
                  andn                   %l1, %l4, %l1
 
                 /* When returning from a NMI (%pil==15) interrupt we want to
@@ -177,11 +149,9 @@ __handle_preemption_continue:
                 bne,pn                  %xcc, __handle_preemption
                  andcc                  %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
                 bne,pn                  %xcc, __handle_signal
-__handle_signal_continue:
                  ldub                   [%g6 + TI_WSAVED], %o2
                 brnz,pn                 %o2, __handle_user_windows
                  nop
-__handle_user_windows_continue:
                 sethi                   %hi(TSTATE_PEF), %o0
                 andcc                   %l1, %o0, %g0
 
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index bd8601601afa..5b836f5aea90 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -539,6 +539,12 @@ do_sigbus:
         __do_fault_siginfo(BUS_ADRERR, SIGBUS, tsk->thread.kregs, address);
 }
 
+static void check_stack_aligned(unsigned long sp)
+{
+        if (sp & 0x7UL)
+                force_sig(SIGILL, current);
+}
+
 void window_overflow_fault(void)
 {
         unsigned long sp;
@@ -547,6 +553,8 @@ void window_overflow_fault(void)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 1);
         force_user_fault(sp, 1);
+
+        check_stack_aligned(sp);
 }
 
 void window_underflow_fault(unsigned long sp)
@@ -554,6 +562,8 @@ void window_underflow_fault(unsigned long sp)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 0);
         force_user_fault(sp, 0);
+
+        check_stack_aligned(sp);
 }
 
 void window_ret_fault(struct pt_regs *regs)
@@ -564,4 +574,6 @@ void window_ret_fault(struct pt_regs *regs)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 0);
         force_user_fault(sp, 0);
+
+        check_stack_aligned(sp);
 }